1522321452 has 60 divisors (see below), whose sum is σ = 3987987696. Its totient is φ = 506377440.

The previous prime is 1522321403. The next prime is 1522321453. The reversal of 1522321452 is 2541232251.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (1522321453) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 158302 + ... + 167642.

Almost surely, 2^1522321452 is an apocalyptic number.

1522321452 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1522321452, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1993993848).

1522321452 is an abundant number, since it is smaller than the sum of its proper divisors (2465666244).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1522321452 is a wasteful number, since it uses less digits than its factorization.

1522321452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9860 (or 9849 counting only the distinct ones).

The product of its digits is 4800, while the sum is 27.

The square root of 1522321452 is about 39016.9380141497. The cubic root of 1522321452 is about 1150.3644596560.

The spelling of 1522321452 in words is "one billion, five hundred twenty-two million, three hundred twenty-one thousand, four hundred fifty-two".